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公开(公告)号：US11533736B2
公开(公告)日：2022-12-20
申请号：US16413256
申请日：2019-05-15
发明人： Toufiqul Islam , Kelvin Kar Kin Au , Jianglei Ma
摘要： Systems and methods of scheduling grant-based traffic and mapping resources for grant-free traffic are provided. Grant-based traffic is scheduled in a first frequency partition, and grant-free traffic is mapped in a second frequency partition. In a first option, grant-based traffic is also scheduled in part of the first partition, but in a limited manner that ensures a given device's transmission and retransmissions do not all experience interference with the grant-based traffic. In another option, some grant-free traffic is mapped to part of the second partition and is spread in frequency across the second partition.
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2.发明申请公开(公告)号：US20200260439A1
公开(公告)日：2020-08-13
申请号：US16864829
申请日：2020-05-01
发明人： Mohamed Adel Salem , Toufiqul Islam
摘要： Current HARQ procedures for grant-based uplink transmissions may not be suitable for implementations in which a UE can simultaneously transmit multiple transport blocks (TBs) to a base station. However, in some scenarios, such as in some grant-free uplink transmission schemes, a UE may simultaneously transmit multiple TBs. Systems and methods are disclosed herein for performing HARQ for situations in which a UE simultaneously transmits multiple TBs to a base station. By using the systems and methods described herein, HARQ may therefore be performed in such situations.
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公开(公告)号：US10736083B2
公开(公告)日：2020-08-04
申请号：US15960677
申请日：2018-04-24
发明人： Toufiqul Islam , Mohamed Adel Salem
摘要： A user equipment (UE) in a wireless communication system may be configured to use particular resources to send one or more uplink transmissions. However, sometimes during operation the particular resources the UE is configured to use are not well suited to the channel conditions at that time or result in interference or collision with other uplink transmissions. Systems and method are disclosed in which downlink control information (DCI) may be used to reconfigure one or more resources used by the UE for an uplink transmission. In some embodiments, resource reconfiguration instructions are sent by the base station along with hybrid automatic repeat request (HARQ) feedback. In some embodiments, a unified downlink signaling format is disclosed that may be used for UEs having different capabilities, with the bits of the unified downlink signaling relaying different instructions to different UEs depending upon the capability of the UE.
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公开(公告)号：US10728002B2
公开(公告)日：2020-07-28
申请号：US15925452
申请日：2018-03-19
发明人： Toufiqul Islam , Amine Maaref , Yongxia Lyu
摘要： A system and method for multiplexing traffic. A wireless device such as a user equipment (UE) may receive a first signal over first resources assigned to carry a first downlink transmission from a base station, and receive a first downlink control indication (DCI) message from the base station. The first DCI message may include a pre-emption region (PR) indication and a PR bitmap, and the PR indication may indicate a location of a time-frequency region. The PR bitmap may include bits associated with different portions of the time-frequency region, and each of the bits in the PR bitmap may indicate whether a preemptive downlink transmission is present in the corresponding portion of the time-frequency region.
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公开(公告)号：US10700904B2
公开(公告)日：2020-06-30
申请号：US15430050
申请日：2017-02-10
摘要： Systems and methods of transmitting using different cyclic prefix types are provided. In some embodiments, the cyclic prefix type used changes on a per time interval based on characteristics of the traffic. In some embodiments, different cyclic prefix types are used simultaneously during a time interval for different traffic types.
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公开(公告)号：US20190386862A1
公开(公告)日：2019-12-19
申请号：US16229813
申请日：2018-12-21
发明人： Toufiqul Islam , Kelvin Kar Kin Au , Jianglei Ma , Liqing Zhang , Zhenfei Tang
摘要： The time-frequency resources of a particular numerology may be used to transmit OFDM symbols that have a cyclic prefix that is longer than the cyclic prefix of other OFDM symbols. This may complicate alignment across different numerologies. Time-frequency resource partitions are disclosed herein that may assist in symbol alignment and/or subframe alignment across the different numerologies.
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公开(公告)号：US20180063865A1
公开(公告)日：2018-03-01
申请号：US15640404
申请日：2017-06-30
发明人： Toufiqul Islam , Peng Zhang , Jiayin Zhang
CPC分类号： H04W72/14 , H04L5/0007 , H04L5/0044 , H04L5/0064 , H04L5/0087 , H04L5/0091 , H04W72/044 , H04W72/1242 , H04W72/1273 , H04W72/1289 , H04W76/27 , H04W88/02 , H04W88/08
摘要： A system and method for multiplexing traffic. A wireless device such as a base station may schedule a first transmission of first data (e.g., latency tolerant data) to a first UE on first resources, and transmit second data (e.g., low latency data) to a second UE on a portion of the first resources. The base station may signal a first indicator e.g. via Radio Resource Control (RRC) signaling to the first UE indicating that the first UE is to monitor for a second indicator that itself indicates the presence of second data on the first resources. The base station may then signal a second indicator to the first UE to indicate the presence of the second data on the first resources. By using the first indicator to initiate the monitoring of the second indicator, the first UE can reduce the amount of monitoring it needs to perform if there is no second data traffic in a certain period of time or in a certain frequency band.
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公开(公告)号：US20230318751A1
公开(公告)日：2023-10-05
申请号：US18330919
申请日：2023-06-07
发明人： Mohamed Adel Salem , Jiayin Zhang , Toufiqul Islam , Zhenfei Tang , Amine Maaref , Jianglei Ma
IPC分类号： H04L1/1812 , H04W80/02 , H04L5/00 , H04W72/23
CPC分类号： H04L1/1819 , H04W80/02 , H04L5/0055 , H04W72/23
摘要： A method includes receiving a first assignment for a first transmission with a first hybrid automatic repeat request (HARQ) process identifier (process ID) in a first network resource, receiving a second assignment for a second transmission with a second HARQ process ID in a second network resource, wherein the first network resource and the second network resource differ in a domain other than a time domain, detecting an indication indicating that the first HARQ process ID and the second HARQ process ID map to a same transmission block (TB), and communicating with an access node, a transmission associated with at least one of the first HARQ process ID or the second HARQ process ID.
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公开(公告)号：US11336415B2
公开(公告)日：2022-05-17
申请号：US16910173
申请日：2020-06-24
发明人： Toufiqul Islam , Amine Maaref , Yongxia Lyu
摘要： A system and method for multiplexing traffic. A wireless device such as a user equipment (UE) may receive a first signal over first resources assigned to carry a first downlink transmission from a base station, and receive a first downlink control indication (DCI) message from the base station. The first DCI message may include a pre-emption region (PR) indication and a PR bitmap, and the PR indication may indicate a location of a time-frequency region. The PR bitmap may include bits associated with different portions of the time-frequency region, and each of the bits in the PR bitmap may indicate whether a preemptive downlink transmission is present in the corresponding portion of the time-frequency region.
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10.发明授权公开(公告)号：US11102786B2
公开(公告)日：2021-08-24
申请号：US15910238
申请日：2018-03-02
摘要： Methods and devices for enhancing the spectral efficiency and/or reliability of uplink transmission without grant are provided. Uplink transmissions without grant are transmitted by UEs or received by base stations in accordance with resource groups that map initial uplink transmissions without grant and non-zero numbers of re-transmissions without grant to sub-regions of a grant-free region of a time-frequency resource.
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